tee_supplicant: add register memory feature

If OP-TEE and kernel support registereted shared memory,
then supplicant will use this feature instead of using
shared memory pool.

Signed-off-by: Volodymyr Babchuk <vlad.babchuk@gmail.com>
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>
Reviewed-by: Etienne Carriere <etienne.carriere@linaro.org>